Implement TramplesMinimize as a move flag (#175)

* Implement "TramplesMinimize" as a move flag

Implemented `TramplesMinimize` as a move flag. Due to it, removed effect codes `FlinchTargetTrampleMinimize` and `ParalyzeTargetTrampleMinimize` (the second one was exclusive to Body Slam). Moves that had them now have the effect codes `FlinchTarget` and `ParalyzeTarget`, respectively.

The code now does not check if the parameter of `tramplesMinimize?` is 1 or 2, it now checks if it is `true` or `false`. For the effect that causes the moves with this flag to skip accuracy checks, it also checks if `Settings::MECHANICS_GENERATION` is equal to or greater than 6.

Data on which moves are to be treated as able to double damage if Minimized and skip accuracy checks are [here](https://bulbapedia.bulbagarden.net/wiki/Minimize_(move)#Vulnerability_to_moves).

**Remarks:**
- Dragon Rush, Heat Crash and Heavy Slam could not trample Minimize in Gen 5. Dragon Rush and Heat Crash could do so in Gen 6+, but Heavy Slam could not until Gen 7.
- Double Iron Bash could only trample Minimize in Gen 7.

**TL;DR:**
- Implemented `TramplesMinimize` as a move flag.
- Modified the check for this move flag.
- Removed effect codes `FlinchTargetTrampleMinimize` and `ParalyzeTargetTrampleMinimize`. Moves that had them now have the effect codes `FlinchTarget` and `ParalyzeTarget`, respectively.

Data/Scripts/011_Battle/003_Move/001_Battle_Move.rb

@@ -132,9 +132,9 @@ class Battle::Move
   def pulseMove?;         return @flags.any? { |f| f[/^Pulse$/i] };               end
   def bombMove?;          return @flags.any? { |f| f[/^Bomb$/i] };                end
   def danceMove?;         return @flags.any? { |f| f[/^Dance$/i] };               end
+  # Causes perfect accuracy and double damage if target used Minimize. Perfect accuracy only with Gen 6+ mechanics.
+  def tramplesMinimize?;  return @flags.any? { |f| f[/^TramplesMinimize$/i] };    end
 
-  # Causes perfect accuracy (param=1) and double damage (param=2).
-  def tramplesMinimize?(_param = 1); return false; end
   def nonLethal?(_user, _target); return false; end   # For False Swipe
 
   def ignoresSubstitute?(user)   # user is the Pokémon using this move